{"id":"CVE-2003-0487","url":"https://www.cyber-defence.io/tools/cve/CVE-2003-0487","generatedAt":"2026-10-27T19:37:07.644Z","title":"Multiple buffer overflows in Kerio MailServer 5.6.3 allow remote authenticated users to cause a denial of service and possibly execute arbitrary code via (1) a long showuser parameter in the do_subscribe module, (2) a long folder parameter in the…","description":"Multiple buffer overflows in Kerio MailServer 5.6.3 allow remote authenticated users to cause a denial of service and possibly execute arbitrary code via (1) a long showuser parameter in the do_subscribe module, (2) a long folder parameter in the add_acl module, (3) a long folder parameter in the list module, and (4) a long user parameter in the do_map module.","published":"2003-08-07T04:00:00.000Z","lastModified":"2026-06-16T22:02:18.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":7.5,"severity":"HIGH","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P"},"cwe":[],"affected":["kerio/kerio mailserver"],"epss":{"score":0.11369,"percentile":0.9596,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":5,"verified":true,"firstPublished":"2003-06-18","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":46,"kind":"exploit","title":"Kerio MailServer 5.6.3 - Remote Buffer Overflow","url":"https://www.exploit-db.com/exploits/46","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/remote/46.c","file":"exploits/linux/remote/46.c","published":"2003-06-27","added":"2003-06-26","updated":"2017-10-04","author":"B-r00t","type":"remote","platform":"linux","port":25,"verified":true,"codes":["OSVDB-4954","CVE-2003-0487"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":"http://www.exploit-db.com/screenshots/idlt500/46.png","referenceUrl":null},{"edbId":22803,"kind":"exploit","title":"Kerio MailServer 5.6.3 do_map Module - Overflow","url":"https://www.exploit-db.com/exploits/22803","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/dos/22803.txt","file":"exploits/linux/dos/22803.txt","published":"2003-06-18","added":"2003-06-18","updated":"2012-11-18","author":"David F.Madrid","type":"dos","platform":"linux","port":null,"verified":true,"codes":["CVE-2003-0487","OSVDB-4958"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://www.securityfocus.com/bid/7967/info"},{"edbId":22802,"kind":"exploit","title":"Kerio MailServer 5.6.3 list Module - Overflow","url":"https://www.exploit-db.com/exploits/22802","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/dos/22802.txt","file":"exploits/linux/dos/22802.txt","published":"2003-06-18","added":"2003-06-18","updated":"2012-11-18","author":"David F.Madrid","type":"dos","platform":"linux","port":null,"verified":true,"codes":["CVE-2003-0487","OSVDB-4954"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://www.securityfocus.com/bid/7967/info"},{"edbId":22801,"kind":"exploit","title":"Kerio MailServer 5.6.3 add_acl Module - Overflow","url":"https://www.exploit-db.com/exploits/22801","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/dos/22801.txt","file":"exploits/linux/dos/22801.txt","published":"2003-06-18","added":"2003-06-18","updated":"2016-10-27","author":"David F.Madrid","type":"dos","platform":"linux","port":null,"verified":true,"codes":["CVE-2003-0487","OSVDB-4956"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://www.securityfocus.com/bid/7967/info"},{"edbId":22800,"kind":"exploit","title":"Kerio MailServer 5.6.3 subscribe Module - Overflow","url":"https://www.exploit-db.com/exploits/22800","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/dos/22800.txt","file":"exploits/linux/dos/22800.txt","published":"2003-06-18","added":"2003-06-18","updated":"2012-11-18","author":"David F.Madrid","type":"dos","platform":"linux","port":null,"verified":true,"codes":["CVE-2003-0487","OSVDB-2159"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://www.securityfocus.com/bid/7967/info"}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 11.4%, higher than 96% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://marc.info/?l=bugtraq&m=105596982503760&w=2","source":"cve@mitre.org"},{"url":"http://nautopia.org/vulnerabilidades/kerio_mailserver.htm","tags":["Exploit","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/7967","tags":["Exploit","Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/12368","source":"cve@mitre.org"},{"url":"http://marc.info/?l=bugtraq&m=105596982503760&w=2","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://nautopia.org/vulnerabilidades/kerio_mailserver.htm","tags":["Exploit","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/7967","tags":["Exploit","Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/12368","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2003-0487","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}